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Dell laptop charger output voltage fluctuates from 16.9 V to 19V

Discussion in 'Sensors and Actuators' started by Devsb, Nov 14, 2020.

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  1. Devsb


    Nov 14, 2020
    My Dell latitude laptop battery charger output voltage is fluctuating from 16.9V to 19.2V. My laptop was not charging. When I showed to technician he told power IC is damaged. He replaced IC. Now after repair I am in a fix whether to connect charger to laptop or not due to output voltage fluctuation. Whether this is normal or should I change charger? Can somebody help and suggest?
  2. Kabelsalat


    Jul 5, 2011
    Why not just measure the voltage to ensure the voltage is correct ?
  3. dave9


    Mar 5, 2017
    I'd ask someone in a Dell forum to measure theirs to see if it exhibits the same behavior, if there is not already a topic about it there.
  4. Devsb


    Nov 14, 2020
    I measured voltage in another good Dell laptop charger where voltage fluctuates from 19.1V to 19.5V but not went below 19V. I am not connecting my laptop charger to my laptop in a fear that again my laptop power IC may go bad. If somebody can help and confirms voltage fluctuation from 16.9V to 19.2V is normal, it will help.
  5. spike1947


    Feb 4, 2016
    I am not sure that you can measure the transformer output voltage properly without a load on it , try to connect a load somehow to it , maybe wrap a wire around the outsider of the connector and just hold a paper clip or something to the inside bore of the connector and join them to a load of around 0.5A , then measure while the load is on it ! .
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